Polishing-machine



1.]. HALDEMAN. POLISHING MACHINE.

APPLICATION FILED OCT. 4, 1918.

,1 359 364 Patented Nov. 16, 1920.

2 SHEETSSHEET I.

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UNITED STATES PATENT GFFICE.

JOHN JZIHALDEMAN, or sUNBUnY, PENNSYLVANIA.

POLISHING-MACHINE.

To all whom it may concern:

Be it known that. LJorrN J. HALDEMAN, a citizen of the United States, residing at Sunbury, in the county of Northumberland and State of'Pennsylvania, have invented certain new and useful Improvements in Polishinglvlachincs, of whichthe following Fig. 3 is a sectionalview of the guiding means for connecting rods.

Fig. 4 is a top plan view of the polisher holder.

Fig. 5 is a side elevation of a polisher holder.

pins 8 in slots 9 the length of the stroke of said driving rods is regulated by the adjustment of the crank pins in said slot 9. By the above arrangement 1t Wlll be seen that 'the drivin shafts are alternately reoi rocated in opposite directions. Two connecting rods 1010' sliding horizontally in guide ways 11 in boxes 12 are pivotally connected to driving rods 7-7 at 13-13 and to reciprocating rods 14-14 at 15-15 16-16 indicateconnections for spring 17, said spring exerting a downward or pulling influence on the said rods 1414. 18 indicates an opening in the bench top through which spring 17 passes.

In standards 19 are secured trunnions 20, one of which is shown in Fig. 6, and journaled on said trunnions are two similar eccentrics 21, connected by a part 21, to which Specification of Letters Patent. Application filed October 14, 1918.

Patented Nov. 16,1920; serial No. 257,970. g

is attached a lever 24. Rotatably mounted on the eccentrics are spool shaped cylinders 22, 22 the flanges 23, 23 of these cylinders forming guides for the reciprocating rods 14, which rest upon said cylinders. The lever 24 operates'in a sector-shaped guideway 25, said guideway having a series of holes 26, in which pins may be inserted to hold the lever in any desired position of adjustment. The purpose of said lever is to adjust the eccentrics 21, andthe cylinders 22, 22 thereon, to raise or lower, at will,

the reciprocating rods 1414 on the ends of which are mounted polisher holders 27-27'. The said polisher holders are provided with V- shaped arms 28'28 into which loosely fit the rods 14- 14 .(Fig. 5) and they are heldlin place by means of bolts 29' and '30.- Small spiral springs 31. encircling said'bolts 29"are' interposed between the inner sides ofthe arms 28-28 and reciprocating rods 1414". the retainers 27, 27 by means of bowed spring keepers 33 and thumb screws 34, the keepers bearing against the polishing blocks at the edges of the latter only, to prevent breakage of the same. Bolts 35 pass through each side of the holders 27 having small spiral springs 36 encircling them and interposed between the. inner face 37 of the said holder 27 and the keeper 33. The object of the said spring 36 is to release the keeper 33 when the thumb screw'34 is loos ened. The reed 38 to be polished is held in place by means of clamps 39 which are adjustable by means of screw 40 which has a right and left thread. A carriage 41 which holds the clamps 39 can be moved forward and backward by means of screw 42. A lug 43 on screw 40 is held permanently in place Abrasive blocks 32 are heldin by means of set screw 44, and its object is to limit the movement of the screw 40. The purpose of the movable carriage is to accommodate abrasive blocks of varying thickness. The object of having the rods 14-14 loosely fitted inthe polisher-holder 27, and the springs 31 on each of the said rods is to permit of a slight upward and downward motion of the arms 28-28 when the pole ishing block strikes the sides of the reeds, and thus prevent breakage of any of the parts. By pivoting the driving rods 7-7' in the slots in the gears5 the stroke of the said driving rods is shortened or lengthened, and reeds of varying widths may be polished.

The'drawings show, and only one set of polishers and driving and reciprocating 'rods are described, but the number is not limited, and any number desired may be used at one time.

The operation of the device is as fol lows :-=--The reed to be polished is secured in the clamps by the means described, the abrasive block placed in the center. of the reed. The said block is caused to reciprocate over the surface of the reed by means rod, and means for supporting said rod and adjusting it vertically comprising an eccentric, a lever for rocking said eccentric, and

a guide spool for the rod loosely mounted on said eccentric. V

2. In a polishing machine, the combination witha holder for the article to be polished, of a horizontally movable :rod, a

holder for abrasive material pivoted to one end of said rod, said holder having arms projecting'rearwardly"at opposite sides of the rod, and springs interposed between said arms and the rod.

3. In a polishingmachine, the combination with a holder for the article tobe pol ished, oi a horizontally movable rod, av

holder for abrasive material pivoted to one end of said'rod, said holder having arms projecting rearwardly' at opposite sides of the rod, a bolt extending loosely'through said rod and connected to said arms, .and springs interposed between said arms and the rod.

4. In a polishing machine, the combination with a holder for the article to be polished, of a horizontally movable rod, and aholder for abrasive material connected to the rod, said holder having an opening adapted to receive a block, of abrasive material, and meansfor clamping said block in the holder comprising a spring adapted to engage the block at its edges only. 1

In testimony whereof I afiix my signature in presence of two Witnesses.

' JOHN J. HALDEMAN.

Witnesses:

JOHN WEIsER' BAssLER, C. W. CLEMENT. 

